Winder drive for paper machines



July 19, 1932. D. R. FRANCIS 1,868,285

WINDER DRIVE FOR PAPER MACHINES Filed Jan. 9, 1929 2 Sheets-Sheet 1INVENTOR. JAN/EL R. Fe /vc/5 A TTORNEYIS July 19, 1932. D. R. FRANCIS1,868,285

WINDER DRIVE FOR PAPER MACHINES Filed Jan. 9, 1929 2 Sheets-Sheet 2 QHF.

INVENTOR. JAN/1. R Fe/ /vc/s A TTORNEYS Patented July 19, 1932' unites rPATENT OFFICE,

DANIEL R. FRANCIS, OF WATERBURY, CONNECTICUT, ASSIGNOR TO THE WATERBURYTOOL COMPANY, OF XVATERB URY, CONNECTICUT, A CORPORATION OF CONNECTICUTWIN DER DRIVE FOR YAPER MACHINES Application filed January 9, 1929.Serial No. 331,370. r

The invention relates to paper machines and more particularly to thewinder drives of that class of such machines in which webs of paper areWound in the'form of rolls. In

machines of the indicated type the efliciency of the winding meansvaries at times with the product which is being handled, and chilicultyhas been experienced in producing rolls of uniform density and with thedesired hard centers, when such variations develop. Furthermore, withmany existing types of winder drives it is necessary, when threading-in,to turn the mechanism over by hand in order to avoid a jerkingmotionwhich results from 5 theuse of a slip belt or from slipping theclutch which causes a jerking motion liable to break the sheet, anddangerous to the operators. To turn the winder by hand is objectionable,as the motionis then produced in a series of steps, while practicehasshown that only a slow uniform'motion will produce the start of a highgrade roll. Furthermore, after the roll, has been'started, it isnecessary to quickly bring the winder to full speed in order to obtainthe maximum ro-e duction. On a given machine, it is desirable tobe ableto operate the winder at a number of different speeds so that the speed.at which one sheet may be efficiently handled shall not be limited by avery much weaker sheet made, for instance, on the same paper machine.

The object of the present invention is to provide a. driving meanswhereby the above objections will be automatically overcome and thedesired advantages automatically obtained, and whereby the operator willbe given full control'over his machine, both in speeding up and slowingdown to a. full stop 40 without the use of a brakeand without'anyjerksor sudden variations inthe speed.

The invention contemplates further the provision of a driving meanswhich will facilitate the threading-in process and provide a smooth anduniform-acceleration from the threading-in speed to the running speedwith a constant, even tension on the sheet to thereby avoid breakage ofthe'latter and the delay and Waste resulting therefrom. Other more 6specific objects will appear from the description hereinafter and thefeatures of'novelt will be pointed out in the claims.

In the accompanying drawings, whichillustrate examples of the inventionwithout defining its limits, Fig.1 is a front elevation of a windingmachine embodying the novel driving means; Fi 2 is a diagrammaticsectional elevation; Fig. 8 is a fragmentary view showing anotherdriving arrangement; Fig. 4 is a view similar to Fig. 1 illustrating sostill another form of drive, and Fig. 5 is a detail view,partly insection, of the driving means. i a

The winding machine itself may be of any conventional construction andinclude any of the features generally found in such ma chines, orprovided in special forms thereof; the novel drivingmeans isparticularly adapted to that type of winding machines which include twodrums 10 and 11, suitably journaled in a conventional frame12 inproximity to each other as shown in Fig. 2 to provide a rotating supporton which the roll' of paper 13 is adapted to rest. The web of paper 14may reach the winding machine from any suitable source, as, forinstance, a supply roll '15 suitably supported on the frame 12 andpasses over a plurality of tension rolls 16 located in the. machine inthe usual manner. The required tension on the sheet or web being woundis obtained in any suitable manner as for instance by means of anoverhead idler or pressure roll 17 sometimes called the rider roll andresting upon the surface of the roll 13 being wound, asshown inFig.3. i.

The'improved driving means comprises a fluid pressure motor 18, to whichfluid under pressure is circulated byinean-s of a variable delivery pump'19. v, The fluid pressure motor 18 and the delivery pump 19.may beconstructed as a unit, as shown in Fig; 4, and communicatewith eachotherthrough a suitable valve plate 20, or the delivery pump may beconstructed as a separate independent unit and located at a distancefrom themotor 18, in which case the pump is connected with the motor 18by means of suitable pipes. The variable delivery pump'19is of the wellknown type of pumps employed for variable speed 100 gears, and consistsof a driving shaft 21 on which is mounted a rotatable'barrel 22,provided with a plurality of cylinders 23 extending in parallel relationto the shaft 21. Each cylinder 23 slidably accommodates a piston 24,which is connected by means of .a

piston rod 25 with a swash plate 26, rotatably mounted in an adjustabletilting box or race 27. The latter and with it the swash plate 26 may beadjusted to different angles of inclination relatively to the drivingshaft to vary the strokes of the pistons 24 and therefore the output orthe amount of fl-uidd-deliv ered by the pump for each revolution of the.

cylinder barrel 22. The means for adjusting the inclination .of theswash plate will be more fully described hereinafter.

In the examples of he invention illustrated in the drawings, the motor18 is similar in construction to the pump 19,, excepting that the swashplate 26 and tilting box 257 of said motor arelocated at a fixed angleof inclination with respect to the shaft 21 of said pump 1:9. The pump19 may be driven in any convenient manner and any suitable means, andthe illustrated example has its shaft 21 directly coupled, for

instance, by means of. a flexible coupling 29 with the armature shaftofan electric motor 3.0. Similarly, thedriving shaft 21301" the motor 18may be connected with the drum 1 0 and 11 inany conventional way, as byextending the shaft 31 of the roller 10 and supporting said extension inan outboard bearing 32. On the end of the shaft 31 a gear ,33 is mountedin mesh with .a gear 34 fixed upon the shaft 21 of the motor 18. In somecases as shown in Fig. 3, the shaft 21 of the motor 18 may be directlyconnected with the shaft 31 of the drum 10 and provided with a gear 35meshing with an idler gear 36 which in turn engages a gear 37 on theshaft of the second winder drum 11 so that both drums aredriven at thesame speed and in the same direction. If it is desired to provide ameans for driving the drum 11 either at the same or at a different speedfrom that of the drum 10 to produce a tension on the sheet being wound,the shaft 21*, as shown in Fig. 4, may

" be coupled to the end of a short counter shaft 38 on which are mounteda straight pulley 39 and a tapered. pulley 40. The straight pulley 39 isconnected by means of a belt 41 with asimilar pulley 42 mounted on theshaft 31 of the drum 1-0, whilethe tapered pulley is similarly connectedby means of a belt 43 with a correspondingly'ta pered, but oppositelyarranged pulley 44 lo cated .upon the shaft ofthe drum 11. By shiftingthe belt 43 on the cone or tapered pulleys. 40 and 44,, the speed of thedrum 11 may be slightly varied with respect to the speed of the drum 10to produce a. tension on the sheet or web 14 as it is being wound on theroll 13.

The means for adjusting the swash plate 26 of the delivery pump 19 maybe of any suitable type and as shown consists of a control shaft'45extending transversely to the shaft 21 and journaled in a suitablebearing 45*, as shown in Figs. 1, 4 and 5. I The control shaft 45 isconnected with the swash plate 26 by means of a bearing block 46,slidable in a forked arm comprising an integral part of the tilting box27 and connected with a stub shaft 47., which in turn is connected withthe control shaft 45. In the preferred arrangemerit, the control shaft45 extends in opposite directions beyond the bearing block 46 and isprovided a'tits opposite ends with threaded portions adapted for.screwthreaded engagement with internally threaded nuts 48 r 49 as thecase may be, said nuts being suitably held against movement inaxialdirections but free to rotate relatively to said control shaft 45.Manually operated means are provided for selectively adjusting thecontrol shaft 45 of the pump, said means 00- operating with either oneor the other of the threaded ends of the control shaft 45, de-

operation of the shaft 52, it may be provided '7 with a hand-wheel 54 asshown in Fig. 1..

If foranyreason it is more desirable the arrangement shown in Fig. 4'may be used in which a bevel gear 50*, corresponding to the bevel gear50, is connected with or forms part of the nut 49. This bevel gear 50meshes with a bevel gear 51 fixed upon a shaft "52 journaled in suitablebearings 53 and extending transversely across the machine at the bottomthereof as shown in Fig.

4. To facilitate the operation of this arrangement of the manuallyoperated means, the shaft 52 may be provided with a sprocket wheel 55connected by means of a sprocket chain 56 with a corresponding sprocketwheel 57 secured upon a stub shaft 58 which in such case carries a handwheel 54" corresponding.

to the hand wheel 54and likewise located within easy reach of theoperator; It will be understood that either of the control shafts 52'or52 may be used in a machine dependent upon existing local conditions,and further, that generally speaking, only one of said shafts withitsco-operating parts is necessary. V When the tilting box 27 and theswash plate 26 are perpendicular to theshaft .21, or, mother words, inthe neutral position the pistons 24 have no stroke and consequently nofluid is pumped. Adjustment of the control shaft 45 by means of eitherof the aforesaid control shafts 52 or .52" to tilt the tilting box 27and with it the swash plate 26 regulates the strokes of the pistons 24and causes the output of the pump to be increased or diminished as theangle of inclination of the swash plate 26 increases or decreases withrespect to the shaft 21. When the swash plate 26 is inclined in onedirection, one of the ports of the valve plate becomes the pressureport, while the other port thereof becomes the suction port, while inthe oppositely inclined positions of the swash plate, the pressure andsuction ports are reversed, that is to say, the port which previouslywas the pressure port becomes the suction port, and the previous suctionport becomes the pressure port. In operation and assuming that thecontrol shaft 45 of the pump 19 is in its neutral position and that theelectric motor 30 is started, the operation of said motor will cause thepump barrel 22 to be rotated, which rotation, however, will operate thepump without causing it to pump any fluid to the fluid motor 18, becauseof the setting of the control shaft 45 in its neutral position; as aresult of this, there will be no rotation of the fluid motor 18. If itbe desired to operate the drums 10 and 11 at a verv slow speed, in orderto permit the web 14 to be threaded-in, the hand-wheel 54 or 54 isoperated to adjust the swash plate 26 to a position in which a smallquantity of fluid will be pumped to the fluid motor 18 to thereby causethe latter to rotate slowly, this slow motion being transmitted throughthe existing connections to the drums 10 and 11. In order to operate thewinding machine at the desired running speed, the hand-wheel 54 or 54 isfurther operated to adjust the swash plate 26' to a greater angle tothereby cause the strokes of the pistons 24 to be increased and theoutput of said pump 19 to be correspondingly increased, whereby thefluid motor 18 is driven at acorrespondingly greater speed, which istransmitted by the aforesaid C( nnections to the drums 10 and 11. Toslow down the speed of operation or to completely stop the operation,the parts are actuated in a reverse direction, as will be readilyunderstood.

With the arrangement set forth, the winder drive provides a threading-inspeed which may, ifdesired, be so slow that movement can scarcely bedetected and permits adjustment from this latter speed to the maximum orany intermediate speed as slowly or as rapidly as the operator desiresand in instant and exact response to any movement of the controllingmeans. The arrangement avoids the development of any working or jerkingmotion liable to break the sheet and permits the drive to be adjusted ina manner to handle the web of'paper efliciently, regardless of itstensile strength-whether the same is constant or varies throughout thelength of the web.

Furthermore, the acceleration from the threading-in speed or from theposition of rest to the running speed, or to any intermediate speed'issmooth and uniform, so that the tensionon the web iswithout variationand the danger of breakage of said web is positively avoided. I t

In addition to the above, the novel drive for the windingmeansmakes itpossible to tightly wind the web,commencing with the first wrap of thepaperaround the winding shaft, which tightness can be definitely andefficiently maintained up to the maximum diameter of the roll. Theresulting rolls are consequently hard centered and of uniformdensity,which conditionscan be varied to suit the different varieties ofpaper being handled. L

' It has long been recognized that the oroblem of'windingpaper is one oftension.

- ith the arrangement setforth herein,"the tension may beapplied totheweb gradual- 1y, with the result that the strain on the web islessened and injuryto said web is reduced to a minimum. Furthermore, thedriving means set :forthherein permit the two drum principle of windingpaper tobe used efii ciently and #the utmost advantages thereof to beenjoyed. It is possible to operate the rear winding drum 11 at the samespeed or at a" slightly higher speed than the front drum 10, whichtravels at the same speed as the Web, so that said web is automaticallyplaced under a tension which materially improves the rolling thereof.The windingymea ns is adapted for efficient use with all types ofwinding machines and may be adequately used in machines which includecuttin devices for splitting the webs into individual strips.

Various changes in the specific forms shown and described may bemade'within the scope of the claims without departing from the spirit ofthe invention.

I claim:

1. The combination with a winder of a paper machine of the type whereinthe roll of paper being wound is supported upon the periphery of a pairof winder rolls, of means for driving said winding rolls, for varyingthe speed thereof without interrupting breaks from zero-to apredetermined'maximum speed and for varying the speed of one of said winding rolls relatively to the other to cause a tension to be exerted forwinding the paper roll into a hard center roll, said means comprising afluid pressure actuated motor, a fluid pressure actuated pump forcirculating fluid under pressureto said motor and power means fordriving said pump, a driving condriving connection of variable effectbetween I 7 said motor and the other of said winder rolls.

2.- The Combination with awinder of a paper machine of the type whereinthe roll of. paper being wound is supported u on the periphery of a pairof winder rolls, 0 means for driving said winding rolls, for varying thespeed thereof without interrupting breaks from zero to a predeterminedmaximum speed and for varying the speed of one of said winder rollsrelatively to the other to cause a tension to be exerted forzwinding thepaper roll into a hard center roll, said means comprising a fluidpressure actuated motor, a

M fluid pressure actuated pump for circulating fluid under pressure tosaid motor and power means for driving said pump, a driving connectionof invariable efi'ect between said 7 motor and one of said winder rolls,a drivin connection of variable effect between sai motor and the otherof said winder rolls, said pump being provided with a control shaft vfor infinitely varying the amount of fluid circulated bysaid pump fromzero to a predetermined maximum and thereby producing a correspondingvariation in the speed of said motor, a manually operable controlhandlelocated adjacent to said winding rolls and connections from said controlhandle tosaid control shaft of said pump.

DANIELE. makers.

